Medication information

Cantharone 0.7% top. liquid

This medication is typically used for the treatment of molluscum contagiosum or for the treatment of skin warts. It requires several days to take effect.


Since this medication causes a chemical burn that produces a blister within hours, it must be applied by a physician. The treatment area should be covered with a piece of plastic adhesive tape shortly after application. A follow-up appointment with the physician should be scheduled.

Do not allow this product to come into contact with eyes or mucous membranes (e.g. lips). It should not be applied to skin injured by a cut or scratch.

Side effects

In addition to its desired action, this medication may cause some side effects, notably:

  • it may cause local pain;
  • it may cause local irritation;
  • it may cause blisters at the application site.

Each person may react differently to a treatment. If you think this medication may be causing side effects (including those described here, or others), talk to your health care professional. He or she can help you to determine whether or not the medication is the source of the problem.


As with most medications, this product should be stored at room temperature. Store it in a secure location where it will not be exposed to excessive heat, moisture or direct sunlight. Make sure that any leftover portion is disposed of safely.

General notes

When meeting with any health professional, it is important for you to share the following information:

  • Your medical history and allergies (medication, food, or other);
  • If you're pregnant or want to become pregnant, or if you're breastfeeding;
  • If you use tobacco or cannabis or its derivatives, or if you use recreational drugs;
  • The names of all the medications you take, whether you take them regularly or once in a while, including over-the-counter medications, vitamins, and natural health products.

It is also strongly recommended that you keep an up-to-date list of all the medications you take and carry it with you at all times. This could be useful if you have to see a health professional or need emergency care.

Keep all your medications out of the reach of children and pets and return any unused or expired medications to the pharmacy for proper disposal.